When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm more curious about that random rubber round wheel spinny-ma-bob on the other side... what's that for? Cause its about to get unbolted if it has no purpose.
The rubber thing is a vibration dampner control devise. See when they subsituted the solid rotor(disc) for the wave rotor they had to compensate for each and anothers inadequencies.. Ban me.